Bad service from Manager

I bought a burger from burger King using Uber eats, I was shocked by my order as it looked small and decided to complain instore. I got there and requested for the manager her name was Christina she's so rude to me and dismissed me without checking my order another manger came through her name is Nhlanhla and she apologized and calmed me. I truly Un happy with Christina her management skills sucks. And my burger was wrong.